There is a full programme of games in Tercera Grupo 13 (4th Division) on the 22nd December and 5th January weekend's. ffrm.es/pnfg/ for more detailed info of all the games in Grupo 13.
Murcia teams who play in the 3rd Divsion (Segunda B) include Cartagena, Real Murcia, UCAM Murcia and Yeclano.
Going up to La Liga 2, C.D. Almeria is only the team accessible going into Andalucia but going the other way into Alicante province you have Elche who I think are Biggles's Spanish team. Next closest is Albacete in the Castille La Mancha province.
In La Liga itself you have the 2 teams in Valencia, Valencia C.F & Levante whilst Villareal are a bit further away. There is a motorway towards Granada that splits of the E-7 just after Lorca so Granada would be accessible by bus or car from Murcia Province too.
Personally, I will be at both Lorca's home games on 22nd December & 5th January in Tercera Grupo 13. There are no at all during the actual Christmas/New Year period like there are in England.
Hope this helps.